From Just Solve the File Format Problem
DisplayWrite was an early Word Processing program built by IBM based on the IBM DisplayWriter dedicated system.
Depending on version, DisplayWrite saves documents to a proprietary binary format with the extension .DOC. Versions 4, 4.2, and 5 files have the BOF hex values
80000009 20004F7B 4A5D1800 1460 for the first 14 bytes.
DisplayWrite software cannot save to other word processing formats, making it difficult to migrate content. Many other software titles can import DisplayWrite files, like WordPerfect.
- ↑ https://en.wikipedia.org/wiki/IBM_DisplayWrite
- ↑ https://books.google.com/books?id=Pq3POofPsBEC&lpg=PA248&pg=PA238#v=onepage&q&f=false
- ↑ https://en.wikipedia.org/wiki/IBM_DisplayWrite#File_format
- ↑ https://file-extension.net/seeker/file_extension_doc
- ↑ https://support.corel.com/hc/en-us/articles/217086007-What-file-formats-are-supported-by-WordPerfect
- ↑ https://darrengoossens.wordpress.com/tag/displaywrite/
- ↑ http://bitsavers.informatik.uni-stuttgart.de/pdf/ibm/pc/apps/DisplayWrite_4/74X9315_DisplayWrite_4_Technical_Reference_Aug86.pdf#page=73